US2543002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft indicator system
Assignee: STC PLC
•
Filing: 1944-04-26
•
Granted: 1951-02-27
•
Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Edmond M Deloraine
- 👤 Henri G Bustingies
- 👤 Paul R Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:24
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/0009
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1820571A
Cited
GB361996A
Cited
US2082347A
Cited
US2184843A
Cited
US2165256A
Cited
US2226860A
Cited
USRE22704E
Cited
US2134716A
Cited
US2208376A
Cited
US2204628A
Cited
US2216707A
Cited
US2262245A
Cited
US2400232A
Cited
GB538214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |